Sensoray 311 - Manual (Page 7)

77
Connectors
Video inputs (JP4 )
Pin Signal Pin Signal
1 Video4 2 GND
3 Video3 4 GND
5 - 6 GND
7 Video2 8 GND
9 Video1 10 GND
11 C 12 GND
13 Y 14 GND
Notes:
1. Pins 1 and 13 are connected internally.
2. Pin 9 is connected to the signal pin of the BNC connector (J2).